Merge pull request #414 from ember-bootstrap/renovate/ember-source-6.x

Update dependency ember-source to v6

Author: jelhan

package.json

@@ -58,7 +58,7 @@
     "ember-power-select": "7.2.0",
     "ember-qunit": "6.2.0",
     "ember-resolver": "13.1.1",
-    "ember-source": "4.12.4",
+    "ember-source": "6.7.0",
     "ember-source-channel-url": "3.0.0",
     "ember-template-lint": "7.9.3",
     "ember-try": "4.0.0",